3x1x Rear Bicycle Hub Seat Adapter Extension for Conversion 130mm to 135mm Description: The hub with a length of 130 can be extended to 135 MM to accommodate a bicycle opening of 135 MM. This avoids the need to replace the hub when installing it on the frame of the 135 MM bike, which significantly saves money for enthusiasts. -Stainless steel material, which is much stronger and than aluminum alloy. - Corrosion resistance and rust resistance. -When installing the conversion seat on the hub, the frame can be loaded with little force to fit it. -Suitable for most mountain bikes, road bikes and so on. Specifications : _ Product Name: Rear Hub Conversion Seat Material: stainless steel Color: Size (H) x Wednesday ): approx. 11x20mm/0.43x0.79 inch Weight: 12,5 grams The package includes: 1 pc. Rear hub conversion seat (3 pieces)